*{
    margin: 0;
    padding: 0;
}
.box{
    margin-top: 100px;
    display: flex;
}
.left ul{
    height: 4.693333rem; 
    list-style: none;
}
li{
    border: 1px solid gray;
}
.right{
    border: 1px solid gray;
    /* flex: 1; */
    display: flex;
    flex-wrap: wrap;
    width: 700px;
}
.right div{
    height: 100px;
    width: 200px;
    background: lightgreen;
    margin: 10px;
}